UDC Timing Calculator

[AH64ID]

Not sure how many of you on this forum are using UDC, if any, but...Here is a timing calculator I created for use with Smarty's UDC. The file is not designed by, nor endorsed, by MADS. It's use is purely at your own risk. I assume no responsibility for its use. Okay, onto the file. I built this over the last 6-8 months and have refined it, and checked it's accuracy enough to share. I have had several people test it and all appears good. This is a good tool for tuning, and may not be the final answer for your tune, but is certainly a good start. It's data is only good as the data you feed it, so be accurate. Please let me know if you have any issues with it. I tried to include some instructions to help out. Enjoy!![ATTACH]4993[/ATTACH]

UDC Timing Calculator v1.3.xlsx

[War Eagle]

I haven't tried UDC yet but I am moving that way after I finish trying out all the other tune options in my S-06.Thanks for sharing this work. I am looking forward to learning more about it and then trying it out.

[AH64ID]

If you are willing to spend the time then you will really like it. As an example I wrote 21 SJR tunes, and have just written my 9th S06 tune. It's not that I don't like each tune, it's there are so many variables and with such control you can really fine tune a motor. Some tunes I didn't even run for more than 20 miles, but there may be an hour, two, or twelve, in developing a single tune or change.It's an amazing tool, and my truck drives far better than it ever did, and it drove great pre-UDC. Not to poke at Michael, but in reading about his turbo swap he talked about how easily the truck broke the tires loose. My first thought was "I love not having that problem". It's not because I don't have the power, I make over 700 ft/lbs by 1750 and 800 by 2000 on a dyno with the run starting at 1600, it's because with Smarty and UDC I can tune the truck to where the power is smooth, and useable (i.e. not fighting traction) at any point. Sure I could change a few parameters and roast my tires, but it's so much nicer being able to match power to traction. Again, not a poke at Michael.. just a plus for UDC.

[Blackcuda]

John, thanks again for sharing your knowledge with us.[TABLE=width: 713][TR][TD][TABLE=width: 713][TR][TD]Once I get the truck rolling again I will be looking hard at the UDC.[/TD][/TR][/TABLE][/TD][/TR][/TABLE]

[dorkweed]

If you are willing to spend the time then you will really like it. As an example I wrote 21 SJR tunes, and have just written my 9th S06 tune. It's not that I don't like each tune, it's there are so many variables and with such control you can really fine tune a motor. Some tunes I didn't even run for more than 20 miles, but there may be an hour, two, or twelve, in developing a single tune or change. It's an amazing tool, and my truck drives far better than it ever did, and it drove great pre-UDC. Not to poke at Michael, but in reading about his turbo swap he talked about how easily the truck broke the tires loose. My first thought was "I love not having that problem". It's not because I don't have the power, I make over 700 ft/lbs by 1750 and 800 by 2000 on a dyno with the run starting at 1600, it's because with Smarty and UDC I can tune the truck to where the power is smooth, and useable (i.e. not fighting traction) at any point. Sure I could change a few parameters and roast my tires, but it's so much nicer being able to match power to traction. Again, not a poke at Michael.. just a plus for UDC.

I can break the tires loose on mine real easy on wet roads with my work trailer in tow rowing thru the gears!!

[AH64ID]

I can break the tires loose on mine real easy on wet roads with my work trailer in tow rowing thru the gears!!

I've never had an issue with mine, and my trailer adds 1300lbs of tongue so that helps too. Other than snow/ice I have to REALLY try to break anything loose, and I mean REALLY try.

[dorkweed]

John,Don't know if you've ever driven a 2nd gen or not.................but when I had my '99 the throttle was quicker in response. Like dialing up the torque management on the Smarty in our 3rd gens. You know how there's a slight delay as RP builds.Like with my trailer and wet roads...........the wheel spin doesn't happen "right now"...........it's slightly delayed and then goes; usually as RP builds!!

[AH64ID]

Yeah, the great thing about UDC is you can tune that out. I think RP is a coincidence, as on my truck at least, there is no delay when fuel is applied. It's all part of the programming and tuning. You can have all the power you want, but the throttle is linear. I run my torque management less than stock in the bottom 20% of throttle the linear to about 10% above stock. It certainly makes the truck feel less powerful off the line (compared to the aggressive throttle of box tuners), but it's smooth, easy on the drivetrain and still makes about 50% more torque than stock :-). I also keep PoD at 85, which still develops 100% of the power of PoD99, but the pedal is only 85% as sensitive. Like I said, I am not knocking Michael, or 2nd gens.. .just pointing out one of the great benefits to custom tuning.